Scrubbing machine



' l y `1,6.'2263 May 31927 M. B. BAILY SCRUBBING MACHINE Filed Oct. 2,1925 3 Sheets-Sheet l atto: nu;

yMay 3 1927. 1,627,263

M. B, BAlLY SCRUBBING MACHINE Filed oct. 2, 1925 3 sheets-sheet 2 mlmgwumtoi IM.B.Baily.

m1 Moz .May 3,1927.-

M. B. BAILY SCRUBBING MACHINE Filed Oct. 2, 1925 5 Sheets-Sheet 3grr-uml l o z.

I lto iuiiiaziw4 oF-Ficia. i

nimma n. BAILY, or DUNLAP, Iowa.

. SCBIUBBING MACHINE.

Application med Ootofber 2, 1925. Serial No. 58,998.

The present invention relates to improvements in scrubbing machinesuseful also for cleanin polishing andabrasive purposes,

An o jectof the invention is to provide 'a machine in which the movableparte for accomplishing the scrubbing or ot er work are involved with asuction creating device and with asket arrangement for coming iiicontact with the surface scrubbed for the purpose of assisting to holdthedevice upon the surfaceand removing to this extent the burden ofsupporting the implement from the operator. y

Another object of the invention is to p rovide a machine of thischaracter'in which the suction producing devicel has `the furtherfunction of acting to circulate water or other fluid to the workingimplement and to remove the dirt and other foreign matter therefrom.

A further object of the invention consists in providing for theregulation of the degree of the vacuum formed whereby the machine may bequickly moved over the surface to loe-treated with a minimum of labor onthe part of the operator.

A still further object of the invention lies in providing a power'drivenmachine,

` which will be light in weight and provided with an intere angea'blebrush or other polishing element.

A still further object of the invention is to provide a machine, theorganization of which is compact and which involves the utmostsimiplicity in its construction and method of operation, and whichfurther is ofa most durable nature. With the foregoing and other ob]ectsin view, the invention will be more fully described hereinafter, a'ndwill be more parf ticularly pointed out inthe claims appended hereto. Ai In the drawings, wherein like symbols refer to like or correspondingparts throughout the several views, v

Figure 1 is a vertical section taken through a machine constructedaccording to the present invention.

Figure 2 is `a front elevation thereof. Figure 3 is a' rearelevation ofthe same. Figure 4 is a cross section taken onthe line 4--4 in Figure 1,and

Figure 5 is a similar. section taken line 5-5 also in Figure 1.

Referrin more particularly to the drawings, 10 esignates a cylindricalhlousing on the v` lug 26 is to prevent the rubber of suitable metalwhich is provided with a closed end wall 11. A pistol grip handle 12 ispreferably formed inte ral with the end wall. The ousing 10 is a aptedto con-` tain the field 4windings 13 and armature 14 of a motor. Themotor is driven by a suit-A able source of electrical power (not shown)such asa battery or a conventional 110 volt lighting circuit. Thiscircuit may'be provided with a suitable switch for varying the speed ornumber of revolutions of the arma ture 14 of the motor, all under thecontrol of the operator and used for the several different kinds of workto be performed by the tool.

- The armature 14: is fixed to its shaft 15 by means of a pin 16. Theshaft is journaled in bearings provided at one end by the wall 11 of thehousing and by a'. disk 17 which is seated Within the housing `andsecured thereto by means of an annular row of screws or keepers 18..

The shaft 15 provides a mounting for a suction fans hub 19 which isaixed to it by means of a pin or keeper 20. The fan is preferably formedwith-an annular flange 21; The blades 22 of the fan are preferablyintegral with the flange 21 and hub 19; the flan e 21 serving asareinforcement. The pitc of the blades is such that, when rotated, airwill be caused to move through the fa'n and towards the motor, but isprevented from striking the motor on ac'count of the separating disk orwall 17, said disk 17 being solid and not provided with apertures, suchas the apertures 23 formed in the brush or tool housing member 24.

lThe member 24 is cup shaped and secured the perimeter of the member 24as indicated by the numeral 26. The function ofA this collar 27 frommoving toward the motor. The rubber collar 27 is fiexible and providedwith an outturned flange 28 which is adapted to bear against the surfaceto be cleaned such as the surface indicated at 29.

The end of the revolvable shaft 15 is provided with a disk 30 havingapertures 31 adapted to receive the pins 32 which are secured to theback of the brush or tool 33. The function of the pins 32 is to preventrota'ry motion of the tool 33, except rotation with the shaft 15 anddisk 30.

A set screw 34 is adaptedl to extend through the back 33 vof the tooland be received by screw threads formed within the end of the shaft 15.By this means the tool is removably secured to the shaft 15 for doingwork.

The tool may be provided with bristles 35 secured to the brushs back 33in a conventional manner, or -in lieu of a brush a p olishing tool maybe substituted, a sponge llke tool, or other tool according to the workto bc done as later explained.

At a convenient place upon the perimeter of the member 24, ahose-receiving proJection 3G is placed which hascommunication with theinterior of the member 24. The hose 37 is attached to the member 36,said hose being provided with a `cut-olf cock (not shown), the hosebeing 1n communication with a source of water supply. An exit port forthe water and air is provided at the lower edge of the housing member 10as indicated at 38, said exit port 38 being 1n communication with thefan chamber portion of the housing. To the exit port 38 may be attacheda hose 39 the function of which is to lead the water and dirt away fromthe surface, or object which is being cleaned. With certain forms ofWork the hose 39 may be dispensed with and also the hose 37.

Attached to the member 24 is an air'duct or pipe 40 having communicationwith the interior of the member 24. The function of this duct is toadmit air into the member 24. The amount of air admitted is governed' bythe valve 41, which is normally closed, but may be opened for purposeslater described by means of the lever 42. As shown in Figures 1 and 3,the valve is provided with a threaded stem 43 which proJects through.Ian aperture` formed through the end of the lever 42, and is retained bymeans of the nut or keeper 44. The nut, it 1s obvious, provides anadjustment for the valve 41.

The lever 42 is pivotally mounted by means of the pin 45 to theears 46,said ears preferably being formed integral with the Wall 11 of thehousing 10. The lower end of the lever 42 is adapted to'register withthe upper end of the trigger lever 47, at the point indicated by thenumeral 48. The trigger lever 47 is adapted to have swinging movementabout its pivotal mounting pin 49. This pin 49 is screw-threaded intothe lside wall f the handle 12. The lever 47 is normally drawn backwardby means of the i tension of the contracting spring 50 which is hookedto the lever 47 at one of its ends,

t its other end being secured to the 'pin 51.

This pin 51 is also threaded into the side wall 12 of the handle.

The lower end of the lever 47 terminates in the linger hold 52 which islocated within hold for the operator.

the trigger guard 53, said guard being a part of the handle 12. A setlscrew 54 is provided for preventing the lever 47 from moving too farbackwards.

The handle 12 is half portions, to the wall 11 portion 12 ing attachedto the portion 12 by means of. screws or keepers 55 which are best shownin Figure 3. The function of the cover portion 12 is to prevent dirt,etc., from entering the handle and interferin .with the mechanism andalso to provi e a smooth hand the portion 12 beingattached of thehousing 10, and a cover In operation, the operator grasps the device inone hand placin l his finger on the trigger 52 and moves ta end of thetool against the surface to be cleaned. The switch is closed causingthemotor to revolve the brushes 35 and fan blades 22. The fan causes abackward motion of the air within the cup member 24, moving it throughthe port 38 and this operation causes a vpartial vacuum to be formedwithin the member 24, causing the rubber flange 28 to besucked or forcedagainst the surface 29. This suction or forcing, it will lbe noted,helps support the device against the work or surface 29. The result isthat the operator is relieved from the tiresome task of holding the toolagainst the Work. desires to move the tool to a different location orposition, he may release the suction bypressing the trigger 52, therebycausing the valve 41 to'open, allowing an inrush of air. The inrush ofair being greater than the capacity of the fanV to remove., the resultwill be that the rubber flange 28 will be permitted to loosen from thesurface 29. Of course, the operator may partly open the valve 41 or dosoat intermittent intervals, in a manner to partly hold thetool againstthe surface 29, and in this manner partly hold the tool against the workby means of the partial vacuum and partly by his hand. In this mannerthe tool may be moved over the surface 29 rapidly, which is desirable incertain class of work. Also bv manipulation of the trigger releasevalve, the amount of pressure against the surface 29 may be governed ina manner to cause the brushes 35 to press'hard or to press easy againstthe surface. When a hard pressure is used the flange 28 of the rubbermember 27 will spread outwardly, on account of its flexibility, therebyallowing the fan to cause the brushes 35 to be pressed harder againstthe surface 29 for heavy scrubbing or polishing purposes.

If a sponge brush is substituted for a.

bristle brush for certain class of cleaning and it is desirable to usewater, the operator may open the cock of the hose line 37,

thereby al owing water toenter the mempreferably formed of twoy which issimilar in contour, be-

Now if" the operator l ber 24. This water will be whirled about by thebrush and scattered over the surface to be cleaned, the water, dirt,etc., passing throu h the apertures 23 of the member 24 5 and t roughthe fan rearwardly, and out through the exit port 38.

Several different brushes may be einployed for polishing brass,scrubbing windows, lass, floors and the like. However,

l the too is plarticularly adapted for cleaning surfaces w ich are in avertical or overhead-horizontal position on account of the ability 'oftheltool to hold itself against the surface to be worked withoutstrenuous l exertion of the operator.

I do not wish to be restricted to the size, form and proportions of thevarious parts, and obviously changes could be made in the constructionherein described without de-l parting from the spirit of the mventlon,1t

eing only necessary that such'changes fall withm the scope of theappended claims.

What is claimed is 1. A scrubbing machine comprising a casing having abrush comparment, a fan compartment communicatin therewith and a motorcompartment all lsposed on substantially the same axis and said brushcompartment being open at the side away from' said fan compartment, amotor in said m0- tor compartment, a motor shaft connected with themotor and extending through said fan and brush compartments, a brushmounted on said shaft m the brush compartment, a suction fan mounted onsaid shaft in the fan com aliment, a flexible collar carried by saibrush compartment .and envelo ing the brush, means for` supplying,liquid connected to said brush compartment,

40 an outlet communicating with said fan compartment, an air inlet tothe' brush compart ment, valve means for normally closing, said airinlet, a handle for the casing extending substantially axially from themotor compartment end, and operating means carried y -said handle4 foropemng said valve means.`

2. A scrubbin machine comprising a Acasing having a rush compartment atone end open at its free side, an intermediate fan compartmentcommunicating with the brush compartment and a motor compartment at itsother end cut oil from the fan compartment, a motor in said motorcompartment, a motor shaft connected to the motor and extending axiallyinto the other compartments, a suction fan on said shaft in the fancompartment, a brush secured to said shaft in the brush compartment, aflexible collar enveloping the brush, means for supplying liquidconnected to the brush compartment,

an outlet communicating with the fan compartment, a normally closed airinlet to the rush compartment, and meansfor controlling the inlet of airto said brush compartment. p

3, A scrubbin machine comprising a casingl having brus fan and motorcompartments adjoining one another with the motor compartment cut oliand the fan and brush compartments communicating, means for supplyingliquid connected to the brush compartment, an outlet communicating withthe fan compartment, a flexible collar extending about the brushcompartment, an

`air inlet to the brush compartment, avalve for controlling said airinlet, a handle connected tothe casing, a trigger mechanism carried bysaidghandle and coupled to the valve, a motor in said motor compartment,a shaft driven by the motor and extending into said fan and brushcompartments, a suction fan on the shaft in said fan comartment, and abrush secured to the shaft 1n the brush compartment.

In' testimony whereof, I have aixed my si gnature.

MILNER B. BAILY.

